112 years old now in 2023 - what year born?

Today, 30 November 2023 if a person is 112 years old now, what year was he born? See below:

If 112 years old, year of birth is:
1910 or 1911*

*It depends on whether he was born before or after 1 January 1911.

If now 112 years and his year of birth 1910 if he was born after 30 November 1910 until 31 december 1910 inclusively, and his year of birth is 1911 if he was born from 1 January 1911 to 30 November 1911.

Other examples:

If now 12 years, year of birth 2010 or 2011
If now 14 years, year of birth 2008 or 2009
If now 27 years, year of birth 1995 or 1996
If now 41 years, year of birth 1981 or 1982

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